1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
dnl @synopsis AC_CXX_HAVE_STD_THREAD
dnl
dnl If the compiler supports ISO C++11 <thread> and <mutex>, define
dnl HAVE_STD_THREAD.
dnl
dnl @category Cxx
dnl @author Roger Leigh
dnl @author Roger Leigh <rleigh@codelibre.net>
dnl @version 2017-06-09
dnl @license AllPermissive
AC_DEFUN([AC_CXX_HAVE_STD_THREAD],
[AC_CACHE_CHECK(whether the compiler supports ISO C++11 <thread> and <mutex>,
ac_cv_cxx_have_std_thread,
[AC_REQUIRE([AC_CXX_HAVE_NAMESPACES])
AC_REQUIRE([ACX_PTHREAD])
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
AC_TRY_COMPILE([#include <thread>
#include <mutex>
#include <iostream>
namespace
{
std::mutex m1;
std::recursive_mutex m2;
void
threadmain()
{
std::lock_guard<std::mutex> lock1(m1);
std::lock_guard<std::recursive_mutex> lock2(m2);
std::cout << "In thread" << std::endl;
}
}
],[std::thread foo(threadmain);
foo.join();
return 0;],
ac_cv_cxx_have_std_thread=yes, ac_cv_cxx_have_std_thread=no)
CFLAGS="$save_CFLAGS"
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_have_std_thread" = yes; then
AC_DEFINE(HAVE_STD_THREAD,,[define if the compiler supports ISO C++11 <thread> and <mutex>])
fi
])
|
